Can't Get Rid Of Flickering Noise In Reflection

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This is an example of a reflection pass. In the circled areas, you'll see the dotted reflections. These aren't supposed to be there, and flicker when animated. This is just a straight reflection. No GI, AO, or even any textures.

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Yes. Tried a whole variety of options for max and min. No improvements.

Further info. The model is a clean active extrude nurbs piece. So I don't think that would be part of the problem. I've noticed this kind of poor rendering ability since I started using C4D. This is hardly the first time that I've seen this kind of thing.

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Thanks Karl. I just happened to try that, and found some improvement. I had previously only adjusted the min, but the max has to come up, as you said. This is an unfortunately thing. The render times are likely to really add up, and this seems to be an issue with reflections, as I haven't noticed such artifacts with diffuse or specular channels.

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This is an odd one - not sure why the AA requirements of your scene are so high but raising the Min/Max certainly seems to do the trick. Don't know how complicated the full scene is (I assume that was just the part you could show) but the render hit wasn't catastrophic when I tested the scene. Depends on your machine I guess - I'm on an 8-core Mac Pro. This kind of thing is such a pain, seems like such a diversion when you just want to get on with it.

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Using a quad intel mac, so speed is decent. But yes, the real scene is substantially more complicated. The real bugger is that the artifacts just seem so arbitrary. Other aspects of the same scene look perfect, even with the AA turned WAY back.

Totally agree about the pain. But, I've been having to solve problems on the fly (like we all do) for years. It's just part of the process, and I guess if this stuff were easy, I wouldn't get paid to do what I do!

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OK, I've never used this myself so I'm no expert but there are AA settings in the Compositing Tag under a check box called Force Antialiasing and then you have the same settings as in the AA tab proper. I assume that this Compositing AA setting allows you to set the AA however you want it for the individual object that the tag is attached to and independent of the main AA settings. This would mean that you could push the AA up just for the problem items and so keep your render hit to a minimum. Check the documentation, or maybe someone else can put me straight on this if I've got it wrong.